package com.sky.controller.admin;

import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Set;

@RestController
@RequestMapping("/admin/dish")
@Api(tags = "菜品相关接口")
@Slf4j
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 新增菜品和对应口味
     *
     * @return Result
     */
    @PostMapping
    @ApiOperation("新增菜品")
    public Result save(@RequestBody DishDTO dishDTO) {
        log.info("新增菜品：{}", dishDTO);
        dishService.saveWithFlavor(dishDTO);

        //通过获得的分类，精确删除指定分类的缓存数据
        String key = "dish_" + dishDTO.getCategoryId();
        clearDishCache(key);

        return Result.success();
    }

    /**
     * 菜品分页查询
     */
    @GetMapping("/page")
    @ApiOperation("菜品分页查询")
    public Result<PageResult> page(DishPageQueryDTO dishPageQueryDTO) {
        log.info("菜品分页查询：{}", dishPageQueryDTO);
        PageResult pageResult = dishService.pageQuery(dishPageQueryDTO);

        return Result.success(pageResult);
    }

    /**
     * 批量删除菜品(包含单个删除)
     *
     * @param ids
     * @return
     */
    @DeleteMapping
    @ApiOperation("批量删除菜品")
    //前端传参为  1,2,3... 字符串形式，通过加入@RequestParam注解，让spring自动封装为List<Long>类型
    public Result delete(@RequestParam List<Long> ids) {
        log.info("批量删除菜品：{}", ids);
        dishService.deleteBatch(ids);

        //调用clearDishCache方法删除缓存数据
        clearDishCache("dish_*");

        return Result.success();
    }

    /**
     * 根据id查询菜品  （修改回显）
     */
    @GetMapping("/{id}")
    @ApiOperation("根据id查询菜品")
    public Result<DishVO> getById(@PathVariable Long id) {
        log.info("根据id查询菜品：{}", id);
        DishVO dishVO = dishService.getByIdWithFlavor(id);

        return Result.success(dishVO);
    }


    /**
     * 修改菜品信息
     */

    @PutMapping
    @ApiOperation("修改菜品信息")
    public Result update(@RequestBody DishDTO dishDTO) {
        log.info("修改菜品：{}", dishDTO);
        dishService.updateWithFlavor(dishDTO);

        //调用clearDishCache方法删除缓存数据
        clearDishCache("dish_*");

        return Result.success();
    }

    /**
     * 修改菜品状态
     */

    @ApiOperation("修改菜品状态")
    @PostMapping("/status/{status}")
    public Result tabStatus(@PathVariable Integer status, Long id) {
        log.info("修改菜品状态：{},{}", status, id);
        dishService.tabStatus(status, id);

        //调用clearDishCache方法删除缓存数据
        clearDishCache("dish_*");

        return Result.success();
    }

    /**
     * 根据分类id查询菜品
     *
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<Dish>> getByCategoryId(Long categoryId) {
        log.info("根据分类id查询菜品：{}", categoryId);
        List<Dish> dishes = dishService.getByCategoryId(categoryId);
        return Result.success(dishes);
    }

    /**
     * 清理缓存数据方法
     * @param pattern
     */

    private void clearDishCache(String pattern) {
        //删除所有菜品缓存数据
        Set keys = redisTemplate.keys(pattern);
        redisTemplate.delete(keys);
    }
}
